
-155E
STM-1/OC-3 Add-Drop Multiplexer
Table 1. SFP Interface Characteristics
[nm]
[µm]
(min) (max) (min) (max)
[km]
[miles]
SFP-1
62.5/125 multimode
30
14
20
14
SFP-2
9/125 single mode
28
8
15
8
SFP-3
9/125 single mode
34
10
5
SFP-4
9/125 single mode
34
10
5
SFP-11 Copper uplink Coaxial cable 75Ω – Mini-BNC – – –
– 0.135*
SFP-18A
Tx - 1310
Rx – 1550
9/125 single mode
(single fiber)
Laser
(WDM)
LC -28 -8 -5
40
SFP-18B
Tx – 1550
Rx – 1310
9/125 single mode
(single fiber)
Laser
(WDM)
LC -28 -8 -5
40
SFP-19A
Tx – 1490
Rx – 1570
9/125 single mode
(single fiber)
Laser
(WDM)
LC -30 -8 0
80
SFP-19B
Tx – 1570
Rx – 1490
9/125 single mode
(single fiber)
Laser
(WDM)
LC -30 -8 0
80
SFP-5
850
50/125 multimode
17
9.5
SFP-6
9/125 single mode
20
3
9.5
3
SFP-7
9/125 single mode
22
3
SFP-8D
9/125 single mode
21
3
4
Using RG59 B/U.
Specifications
STM-1/OC-3 MAIN LINK
Number of Ports
1 (second link available for redundancy or
ring support)
Bit Rate
155.52 Mbps ±20 ppm
SFP Transceivers
Characteristics: See
Table 1
Options: See
Ordering
Timing
Internal clock
Recovered from the STM-1/OC-3 interface
External clock from PDH tributary
Station clock
Compliance
SDH: ITU-T G.957
SONET: GR-253-core
Framing
SDH: ITU-T G.707, G.708, G.709
SONET: ANSI T1.105-1995,
GR-253-core
Line Code
NRZ
LAN INTERFACE (OPTIONAL)
Number of Ports
2 or 6 10/100BaseT ports
1 GbE
Compatibility
Relevant sections of IEEE 802.3u, 802.3x,
802.1D and 802.1Q
LAN Table
2,048 MAC addresses (2U) and 8,182
(GbE) with selectable automatic aging time
Data Rate
10BaseT: 10 Mbps
100BaseT: 100 Mbps
1000BaseT: 1000Mbps (Gigabit Ethernet)
Autonegotiation
Connectors (per port)
RJ-45, shielded
SFP socket (for transceivers, see Ordering)
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